阅读说明：本技术 一种青铜线加工工艺 (Bronze wire processing technology ) 是由 邱小华 于 2021-03-24 设计创作，主要内容包括：本公开涉及一种青铜线加工工艺,以解决青铜线导电率较低的问题。包括：将符合青铜线成分要求的线坯在真空中进行加热；在加热时长达到真空加热时长的情况下,确定加热后的线坯的硬度,并根据线坯的硬度确定拉伸参数以及压缩参数；按照拉伸参数控制拉丝机对加热后的线坯进行加工,以及在拉伸过程中将拉丝后的线坯与硫酸铜溶液形成电解回路；在达到电解时长的情况下,按照压缩参数控制拉丝机对经过电解硫酸铜溶液后的线坯进行压缩加工,得到线材半成品；对线材半成品进行退火,并确定退火后的线材半成品的表面凹凸率；根据表面凹凸率确定表面覆炭厚度,并根据表面覆炭厚度对退火后的线材半成品进行覆炭,得到青铜线。(The disclosure relates to a bronze wire processing technology, aiming at solving the problem of low conductivity of bronze wires. The method comprises the following steps: heating the wire blank meeting the component requirement of the bronze wire in vacuum; determining the hardness of the heated wire blank under the condition that the heating time reaches the vacuum heating time, and determining a tensile parameter and a compression parameter according to the hardness of the wire blank; controlling a wire drawing machine to process the heated wire blank according to the drawing parameters, and forming an electrolytic loop by the wire blank after wire drawing and a copper sulfate solution in the drawing process; under the condition of reaching the electrolysis time, controlling a wire drawing machine to perform compression processing on the wire blank subjected to the electrolysis of the copper sulfate solution according to the compression parameters to obtain a wire semi-finished product; annealing the semi-finished wire rod product, and determining the surface concave-convex rate of the annealed semi-finished wire rod product; and determining the surface carbon coating thickness according to the surface concave-convex rate, and coating carbon on the annealed wire semi-finished product according to the surface carbon coating thickness to obtain the bronze wire.)

1. A bronze wire processing technology is characterized by comprising the following steps:

heating the wire blank meeting the component requirement of the bronze wire in vacuum, wherein the vacuum heating temperature is 900-;

determining the hardness of the heated wire blank under the condition that the heating time reaches the vacuum heating time, and determining a tensile parameter and a compression parameter according to the hardness of the wire blank;

controlling a wire drawing machine to process the heated wire blank according to the drawing parameters, and forming an electrolytic loop by the wire blank after wire drawing and a copper sulfate solution in the drawing process;

under the condition that the electrolysis time is up, controlling a wire drawing machine to carry out compression processing on the wire blank subjected to the copper sulfate solution electrolysis according to the compression parameters to obtain a wire semi-finished product, wherein the electrolysis time is determined according to the concentration of the copper sulfate solution and the copper content of the wire blank;

annealing the semi-finished wire rod product, and determining the surface concave-convex rate of the annealed semi-finished wire rod product;

and determining the surface carbon coating thickness according to the surface concave-convex rate, and coating carbon on the annealed wire rod semi-finished product according to the surface carbon coating thickness to obtain the bronze wire.

2. The process of claim 1, wherein the step of determining the surface carbon coating thickness according to the surface roughness and the step of coating carbon on the annealed wire semi-finished product according to the surface carbon coating thickness to obtain the bronze wire comprises the following steps:

determining whether the surface roughness meets the target roughness required by the target application or not according to the target application of the bronze wire;

determining the surface carbon coating thickness according to the surface roughness ratio under the condition that the surface roughness ratio meets the target roughness ratio required by the target application;

and coating carbon on the annealed wire semi-finished product according to the surface carbon coating thickness and the target carbon coating thickness required by the target application to obtain the bronze wire.

3. The process of claim 2, further comprising:

determining rolling parameters for the annealed wire rod semi-finished product according to the target concave-convex ratio and the surface concave-convex ratio when the surface concave-convex ratio does not meet the target concave-convex ratio required by the target application;

rolling the annealed wire rod semi-finished product according to the rolling parameters to obtain a target wire rod semi-finished product; and the number of the first and second electrodes,

and coating carbon on the target wire semi-finished product according to the surface carbon coating thickness and the target carbon coating thickness required by the target application to obtain the bronze wire.

4. The process according to claim 1, wherein the stretching parameters include stretching force magnitude, stretching time length and stretching length of each stretching;

the compression parameters comprise the magnitude of the compression force and the compression time length.

5. The method according to claim 4, characterized in that the bronze wire is obtained by the process according to any one of claims 1 to 4.

Technical Field

The disclosure relates to the technical field of alloy wire manufacturing, in particular to a bronze wire processing technology.

Background

Compared with other alloy wires, the bronze wire has a good use prospect when used as a patch cord in electronics, automobiles, electric power, communication and the like, for example, in an automobile wire, the brass wire has high hardness and high cost, the bronze wire has low hardness, and the bronze wire is suitable for being arranged in narrow and complex wiring space of an automobile, and the bronze wire has low price and is beneficial to reducing the manufacturing cost of the automobile. Therefore, the application space of the bronze wire is far higher than that of the brass wire.

In the related technology, a wire blank is produced by adopting a horizontal continuous casting process in the process of processing the bronze wire, and the surface of the wire blank subjected to horizontal continuous casting is free from a protective layer, so that the wire blank is easy to oxidize, and the conductivity of the bronze wire is easily reduced due to long service environment and time. In addition, the internal structure of the wire blank is low in uniformity, and the wire blank is easy to break in the drawing production process, so that the conductivity is reduced.

Disclosure of Invention

The purpose of the disclosure is to provide a bronze wire processing technology to solve the problem of low conductivity of bronze wires in the related art.

In order to achieve the above object, a first aspect of the present disclosure provides a bronze wire processing process, including:

heating the wire blank meeting the component requirement of the bronze wire in vacuum, wherein the vacuum heating temperature is 900-;

determining the hardness of the heated wire blank under the condition that the heating time reaches the vacuum heating time, and determining a tensile parameter and a compression parameter according to the hardness of the wire blank;

controlling a wire drawing machine to process the heated wire blank according to the drawing parameters, and forming an electrolytic loop by the wire blank after wire drawing and a copper sulfate solution in the drawing process;

under the condition that the electrolysis time is up, controlling a wire drawing machine to carry out compression processing on the wire blank subjected to the copper sulfate solution electrolysis according to the compression parameters to obtain a wire semi-finished product, wherein the electrolysis time is determined according to the concentration of the copper sulfate solution and the copper content of the wire blank;

annealing the semi-finished wire rod product, and determining the surface concave-convex rate of the annealed semi-finished wire rod product;

and determining the surface carbon coating thickness according to the surface concave-convex rate, and coating carbon on the annealed wire rod semi-finished product according to the surface carbon coating thickness to obtain the bronze wire.

Preferably, the determining the surface carbon coating thickness according to the surface concave-convex ratio, and performing carbon coating on the annealed wire rod semi-finished product according to the surface carbon coating thickness to obtain the bronze wire comprises:

determining whether the surface roughness meets the target roughness required by the target application or not according to the target application of the bronze wire;

determining the surface carbon coating thickness according to the surface roughness ratio under the condition that the surface roughness ratio meets the target roughness ratio required by the target application;

and coating carbon on the annealed wire semi-finished product according to the surface carbon coating thickness and the target carbon coating thickness required by the target application to obtain the bronze wire.

Preferably, the process further comprises:

determining rolling parameters for the annealed wire rod semi-finished product according to the target concave-convex ratio and the surface concave-convex ratio when the surface concave-convex ratio does not meet the target concave-convex ratio required by the target application;

rolling the annealed wire rod semi-finished product according to the rolling parameters to obtain a target wire rod semi-finished product; and the number of the first and second electrodes,

and coating carbon on the target wire semi-finished product according to the surface carbon coating thickness and the target carbon coating thickness required by the target application to obtain the bronze wire.

Preferably, the stretching parameters comprise stretching force magnitude, stretching time length and stretching length of each stretching;

the compression parameters comprise the magnitude of the compression force and the compression time length.

Preferably, the bronze wire is obtained by the process of any one of the above-mentioned processes.

Through the technical scheme, the following technical effects can be at least achieved:

heating a wire blank meeting the component requirement of the bronze wire in vacuum; determining the hardness of the heated wire blank under the condition that the heating time reaches the vacuum heating time, and determining a tensile parameter and a compression parameter according to the hardness of the wire blank; controlling a wire drawing machine to process the heated wire blank according to the drawing parameters, and forming an electrolytic loop by the wire blank after wire drawing and a copper sulfate solution in the drawing process; under the condition of reaching the electrolysis time, controlling a wire drawing machine to perform compression processing on the wire blank subjected to the electrolysis of the copper sulfate solution according to the compression parameters to obtain a wire semi-finished product; annealing the semi-finished wire rod product, and determining the surface concave-convex rate of the annealed semi-finished wire rod product; and determining the surface carbon coating thickness according to the surface concave-convex rate, and coating carbon on the annealed wire semi-finished product according to the surface carbon coating thickness to obtain the bronze wire. Therefore, the wire blank with different hardness after being heated in vacuum is stretched and compressed and correspondingly passes through the electrolytic copper solution, the uniformity of the wire blank can be improved, the protective performance can be improved based on carbon coating operation, and the conductivity of the bronze wire is further ensured.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a flow chart illustrating a bronze wire processing process according to an exemplary embodiment.

Fig. 2 is a flowchart illustrating one implementation of step S16 in fig. 1, according to an example embodiment.

Fig. 3 is another flowchart illustrating an implementation of step S16 of fig. 1 according to an example embodiment.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

To this end, the present disclosure provides a bronze wire processing process, referring to a flowchart of the bronze wire processing process shown in fig. 1, the process including:

s11, heating the wire blank meeting the component requirements of the bronze wire in vacuum, wherein the vacuum heating temperature is 900-1050 ℃, and the vacuum heating time is 2-6 min;

s12, determining the hardness of the heated wire blank under the condition that the heating time reaches the vacuum heating time, and determining a tensile parameter and a compression parameter according to the hardness of the wire blank;

s13, controlling a wire drawing machine to process the heated wire blank according to the drawing parameters, and forming an electrolytic loop by the wire drawn wire blank and a copper sulfate solution in the drawing process;

s14, under the condition that the electrolysis time is up, controlling a wire drawing machine to carry out compression processing on the wire blank subjected to the copper sulfate solution electrolysis according to the compression parameters to obtain a wire semi-finished product, wherein the electrolysis time is determined according to the concentration of the copper sulfate solution and the copper content of the wire blank;

s15, annealing the semi-finished wire rod product, and determining the surface concave-convex rate of the annealed semi-finished wire rod product;

s16, determining the surface carbon coating thickness according to the surface concave-convex rate, and coating carbon on the annealed wire semi-finished product according to the surface carbon coating thickness to obtain the bronze wire.

Optionally, the vacuum heating temperature and the vacuum heating time period are determined according to the wire diameter of the bronze wire.

Specifically, the hardness of the wire blank is graded, each grade corresponds to different tensile parameters and compression parameters, the tensile parameters and the compression parameters corresponding to the hardness of the wire blank can be determined in a table look-up mode, and the table is established according to the corresponding relation among the hardness, the tensile parameters and the compression parameters and the uniformity.

Optionally, the hardness of the wire blank may be input into a parameter determination model, so as to obtain a tensile parameter and a compression parameter corresponding to the wire blank, where the parameter determination model is obtained by training a training sample indicating the hardness of the wire blank, and the uniformity of the wire blank corresponding to different tensile parameters and compression parameters.

According to the technical scheme, the wire blank meeting the component requirements of the bronze wire is heated in vacuum; determining the hardness of the heated wire blank under the condition that the heating time reaches the vacuum heating time, and determining a tensile parameter and a compression parameter according to the hardness of the wire blank; controlling a wire drawing machine to process the heated wire blank according to the drawing parameters, and forming an electrolytic loop by the wire blank after wire drawing and a copper sulfate solution in the drawing process; under the condition of reaching the electrolysis time, controlling a wire drawing machine to perform compression processing on the wire blank subjected to the electrolysis of the copper sulfate solution according to the compression parameters to obtain a wire semi-finished product; annealing the semi-finished wire rod product, and determining the surface concave-convex rate of the annealed semi-finished wire rod product; and determining the surface carbon coating thickness according to the surface concave-convex rate, and coating carbon on the annealed wire semi-finished product according to the surface carbon coating thickness to obtain the bronze wire. Therefore, the wire blank with different hardness after being heated in vacuum is stretched and compressed and correspondingly passes through the electrolytic copper solution, the uniformity of the wire blank can be improved, the protective performance can be improved based on carbon coating operation, and the conductivity of the bronze wire is further ensured.

Preferably, referring to a flowchart for implementing step S106 in fig. 1 shown in fig. 2, in step S16, the determining a surface carbon coating thickness according to the surface irregularity ratio, and performing carbon coating on the annealed wire rod semi-finished product according to the surface carbon coating thickness to obtain the bronze wire, includes:

s161, determining whether the surface roughness meets the target roughness required by the target application or not according to the target application of the bronze wire;

s162, determining the surface carbon coating thickness according to the surface roughness ratio under the condition that the surface roughness ratio meets the target roughness ratio required by the target application;

and S163, according to the surface carbon coating thickness and the target carbon coating thickness required by the target application, performing carbon coating on the annealed semi-finished wire rod to obtain the bronze wire.

Preferably, referring to a flowchart shown in fig. 3 for implementing step S106 in fig. 1, the process further includes:

s1061, determining rolling parameters of the annealed wire rod semi-finished product according to the target concave-convex rate and the surface concave-convex rate when the surface concave-convex rate does not meet the target concave-convex rate required by the target application;

s1062, rolling the annealed wire rod semi-finished product according to the rolling parameters to obtain a target wire rod semi-finished product; and the number of the first and second electrodes,

and S1063, coating carbon on the target wire semi-finished product according to the surface carbon coating thickness and the target carbon coating thickness required by the target application to obtain the bronze wire.

Optionally, after carbon coating is completed, the out-of-roundness of the bronze wire is determined, and in the case that the out-of-roundness does not meet the national standard, the roundness of the bronze wire is processed.

Preferably, the stretching parameters comprise stretching force magnitude, stretching time length and stretching length of each stretching;

the compression parameters comprise the magnitude of the compression force and the compression time length.

The first embodiment is as follows:

under the condition that the wire diameter of the bronze wire is 0.1-0.3 mm, heating a wire blank meeting the component requirement of the bronze wire in vacuum, wherein the vacuum heating temperature is 900 ℃, and the vacuum heating time is 2 min;

under the condition that the heating time length reaches the vacuum heating time length and the hardness of the heated wire blank is determined to be below 80kg/mm, determining the tensile force to be 0.5N, the tensile time length to be 0.1s and the tensile length to be 0.001mm, the compressive force to be 0.25N and the compression time length to be 0.05 s; under the condition that the hardness of the heated wire blank is determined to be more than 80kg/mm and less than 120kg/mm, determining the magnitude of a tensile force to be 0.55N, the duration of the tensile force to be 0.15s and the length of the tensile force to be 0.0025mm, and the magnitude of a compression force to be 0.3N and the duration of the compression force to be 0.05 s; under the condition that the hardness of the heated wire blank is determined to be more than 120kg/mm and less than 150kg/mm, determining the magnitude of a tensile force to be 0.65N, the duration of the tensile force to be 0.2s and the length of the tensile force to be 0.01mm, the magnitude of a compressive force to be 0.4N and the duration of the compressive force to be 0.05 s; when the hardness of the heated wire rod was determined to be more than 150kg/mm, the magnitude of the tensile force was determined to be 0.5N, the length of the tensile force to be 0.5s, and the length of the tensile force to be 0.02mm, the magnitude of the compressive force was determined to be 0.45N, and the length of the compressive force to be 0.15 s.

Controlling a wire drawing machine to process the heated wire blank according to the drawing parameters, and forming an electrolytic loop by the wire drawn wire blank and a copper sulfate solution in the drawing process, wherein the concentration of the copper sulfate solution is 0.04mol/L, and the electrolytic time is 3 min;

under the condition that the electrolysis time is up, controlling a wire drawing machine to perform compression processing on the wire blank subjected to the electrolysis of the copper sulfate solution according to the compression parameters to obtain a semi-finished wire rod product;

annealing the semi-finished wire, wherein annealing is carried out by adopting a pit furnace, the temperature is 320-330 ℃, the temperature rise time is 20-25min, and the heat preservation time is 70-90 min; annealing in a bell-type furnace at the temperature of 330-335 ℃, the temperature rise time of 20-25 and the heat preservation time of 100-120min, and determining the surface concave-convex rate of the annealed wire semi-finished product;

determining the surface carbon coating thickness to be 0.01nm under the condition that the surface concave-convex rate is less than 0.2%, determining the surface carbon coating thickness to be 0.02nm under the condition that the surface concave-convex rate is 0.2-0.3%, determining the surface carbon coating thickness to be 0.03nm under the condition that the surface concave-convex rate is more than 0.3%, and coating the annealed wire rod semi-finished product with carbon according to the surface carbon coating thickness to obtain the bronze wire.

Example two:

under the condition that the wire diameter of the bronze wire is 0.3-0.6 mm, heating a wire blank meeting the component requirement of the bronze wire in vacuum, wherein the vacuum heating temperature is 950 ℃, and the vacuum heating time is 3 min;

under the condition that the heating time length reaches the vacuum heating time length and the hardness of the heated wire blank is determined to be less than or equal to 80kg/mm, determining the tensile force to be 0.55N, the tensile time length to be 0.15s and the tensile length to be 0.003mm, the compressive force to be 0.4N and the compression time length to be 0.1 s; under the condition that the hardness of the heated wire blank is determined to be more than 80kg/mm and less than 120kg/mm, determining the magnitude of a tensile force to be 1N, the duration of the tensile force to be 0.5s and the length of the tensile force to be 0.005mm, the magnitude of a compressive force to be 0.5N and the duration of the compressive force to be 0.1 s; under the condition that the hardness of the heated wire blank is determined to be more than 120kg/mm and less than 150kg/mm, the magnitude of a tensile force is determined to be 1.5N, the tensile time is determined to be 0.2s, the tensile length is determined to be 0.01mm, the magnitude of a compression force is determined to be 0.45N, and the compression time is determined to be 0.2 s; when the hardness of the heated wire rod was determined to be more than 150kg/mm, the magnitude of the tensile force was determined to be 2N, the length of the tensile force was determined to be 0.5s, and the length of the tensile force was determined to be 0.02mm, and the magnitude of the compressive force was determined to be 1N, and the length of the compressive force was determined to be 0.15 s.

Controlling a wire drawing machine to process the heated wire blank according to the drawing parameters, and forming an electrolytic loop by the wire drawn wire blank and a copper sulfate solution in the drawing process, wherein the concentration of the copper sulfate solution is 0.04mol/L, and the electrolytic time is 4 min;

under the condition that the electrolysis time is up, controlling a wire drawing machine to perform compression processing on the wire blank subjected to the electrolysis of the copper sulfate solution according to the compression parameters to obtain a semi-finished wire rod product;

annealing the semi-finished wire, wherein annealing is carried out by adopting a pit furnace, the temperature is 320-330 ℃, the temperature rise time is 20-25min, and the heat preservation time is 70-90 min; annealing in a bell-type furnace at the temperature of 330-335 ℃, the temperature rise time of 20-25 and the heat preservation time of 100-120min, and determining the surface concave-convex rate of the annealed wire semi-finished product;

determining the surface carbon coating thickness to be 0.01nm under the condition that the surface concave-convex rate is less than 0.2%, determining the surface carbon coating thickness to be 0.02nm under the condition that the surface concave-convex rate is 0.2-0.3%, determining the surface carbon coating thickness to be 0.03nm under the condition that the surface concave-convex rate is more than 0.3%, and coating the annealed wire rod semi-finished product with carbon according to the surface carbon coating thickness to obtain the bronze wire.

Example three:

under the condition that the wire diameter of the bronze wire is 0.6-1.0 mm, heating a wire blank meeting the component requirement of the bronze wire in vacuum, wherein the vacuum heating temperature is 1000 ℃, and the vacuum heating time is 4 min;

under the condition that the heating time length reaches the vacuum heating time length and the hardness of the heated wire blank is determined to be below 80kg/mm, determining the tensile force to be 1.5N, the tensile time length to be 0.2s and the tensile length to be 0.01mm, the compression force to be 1.0N and the compression time length to be 0.1 s; under the condition that the hardness of the heated wire blank is determined to be more than 80kg/mm and less than 120kg/mm, determining the magnitude of a tensile force to be 2N, the tensile time to be 0.5s and the tensile length to be 0.02mm, the magnitude of a compression force to be 1.0N and the compression time to be 0.1 s; under the condition that the hardness of the heated wire blank is determined to be more than 120kg/mm and less than 150kg/mm, determining the magnitude of a tensile force to be 3N, the duration of the tensile force to be 0.3s and the length of the tensile force to be 0.1mm, the magnitude of a compression force to be 2N and the duration of the compression force to be 0.2 s; when the hardness of the heated wire rod was determined to be more than 150kg/mm, the magnitude of the tensile force was determined to be 4N, the length of the tensile force to be 0.5s, and the length of the tensile force to be 0.1mm, the magnitude of the compressive force was determined to be 2.5N, and the length of the compressive force to be 0.25 s.

Controlling a wire drawing machine to process the heated wire blank according to the drawing parameters, and forming an electrolytic loop by the wire drawn wire blank and a copper sulfate solution in the drawing process, wherein the concentration of the copper sulfate solution is 0.06mol/L, and the electrolytic time is 5 min;

under the condition that the electrolysis time is up, controlling a wire drawing machine to perform compression processing on the wire blank subjected to the electrolysis of the copper sulfate solution according to the compression parameters to obtain a semi-finished wire rod product;

annealing the semi-finished wire, wherein annealing is carried out by adopting a pit furnace, the temperature is 320-330 ℃, the temperature rise time is 20-25min, and the heat preservation time is 70-90 min; annealing in a bell-type furnace at the temperature of 330-335 ℃, the temperature rise time of 20-25 and the heat preservation time of 100-120min, and determining the surface concave-convex rate of the annealed wire semi-finished product;

determining the surface carbon coating thickness to be 0.01nm under the condition that the surface concave-convex rate is less than 0.2%, determining the surface carbon coating thickness to be 0.02nm under the condition that the surface concave-convex rate is 0.2-0.3%, determining the surface carbon coating thickness to be 0.03nm under the condition that the surface concave-convex rate is more than 0.3%, and coating the annealed wire rod semi-finished product with carbon according to the surface carbon coating thickness to obtain the bronze wire.

Example four:

under the condition that the wire diameter of the bronze wire is 1.0-3.0 mm, heating a wire blank meeting the component requirement of the bronze wire in vacuum, wherein the vacuum heating temperature is 1000 ℃, and the vacuum heating time is 5 min;

under the condition that the heating time length reaches the vacuum heating time length and the hardness of the heated wire blank is determined to be below 80kg/mm, determining the tensile force to be 2.5N, the tensile time length to be 0.5s and the tensile length to be 0.05mm, the compression force to be 2.0N and the compression time length to be 0.5 s; under the condition that the hardness of the heated wire blank is determined to be more than 80kg/mm and less than 120kg/mm, determining the magnitude of a tensile force to be 2.5N, the length of a tensile time to be 1s and the length of a tensile length to be 0.05mm, the magnitude of a compression force to be 2.0N and the length of a compression time to be 1 s; under the condition that the hardness of the heated wire blank is determined to be more than 120kg/mm and less than 150kg/mm, determining the magnitude of a tensile force to be 3.5N, the duration of the tensile force to be 1s and the length of the tensile force to be 1mm, the magnitude of a compression force to be 3N and the duration of the compression force to be 1 s; when the hardness of the heated wire rod was determined to be more than 150kg/mm, the magnitude of the tensile force was determined to be 4.5N, the length of the tensile force to be 1.5s, and the length of the tensile force to be 2mm, the magnitude of the compressive force to be 3.2N, and the length of the compressive force to be 1.25 s.

Controlling a wire drawing machine to process the heated wire blank according to the drawing parameters, and forming an electrolytic loop by the wire drawn wire blank and a copper sulfate solution in the drawing process, wherein the concentration of the copper sulfate solution is 0.08mol/L, and the electrolytic time is 4 min;

under the condition that the electrolysis time is up, controlling a wire drawing machine to perform compression processing on the wire blank subjected to the electrolysis of the copper sulfate solution according to the compression parameters to obtain a semi-finished wire rod product;

annealing the semi-finished wire, wherein annealing is carried out by adopting a pit furnace, the temperature is 320-330 ℃, the temperature rise time is 20-25min, and the heat preservation time is 70-90 min; annealing in a bell-type furnace at the temperature of 330-335 ℃, the temperature rise time of 20-25 and the heat preservation time of 100-120min, and determining the surface concave-convex rate of the annealed wire semi-finished product;

determining the surface carbon coating thickness to be 0.01nm under the condition that the surface concave-convex rate is less than 0.2%, determining the surface carbon coating thickness to be 0.02nm under the condition that the surface concave-convex rate is 0.2-0.3%, determining the surface carbon coating thickness to be 0.03nm under the condition that the surface concave-convex rate is more than 0.3%, and coating the annealed wire rod semi-finished product with carbon according to the surface carbon coating thickness to obtain the bronze wire.

Example five:

under the condition that the wire diameter of the bronze wire is 3.0-6.0 mm, heating a wire blank meeting the component requirement of the bronze wire in vacuum, wherein the vacuum heating temperature is 1050 ℃, and the vacuum heating time is 6 min;

under the condition that the heating time length reaches the vacuum heating time length and the hardness of the heated wire blank is determined to be below 80kg/mm, determining the tensile force to be 4N, the tensile time length to be 1s and the tensile length to be 2.5mm, the compression force to be 3.5N and the compression time length to be 1 s; under the condition that the hardness of the heated wire blank is determined to be more than 80kg/mm and less than 120kg/mm, determining the tensile force to be 5N, the tensile time to be 1.5s and the tensile length to be 3mm, the compression force to be 4N and the compression time to be 1 s; under the condition that the hardness of the heated wire blank is determined to be more than 120kg/mm and less than 150kg/mm, determining the magnitude of a tensile force to be 6.5N, the duration of the tensile force to be 1s and the length of the tensile force to be 3mm, the magnitude of a compression force to be 5N and the duration of the compression force to be 1.5 s; when the hardness of the heated wire rod was determined to be more than 150kg/mm, the magnitude of the tensile force was determined to be 7N, the length of the tensile force was determined to be 1.5s, and the length of the tensile force was determined to be 3.5mm, and the magnitude of the compressive force was determined to be 5N, and the length of the compressive force was determined to be 1.25 s.

Controlling a wire drawing machine to process the heated wire blank according to the drawing parameters, and forming an electrolysis loop by the wire drawn wire blank and a copper sulfate solution in the drawing process, wherein the concentration of the copper sulfate solution is 0.08mol/L, and the electrolysis time is 5 min;

under the condition that the electrolysis time is up, controlling a wire drawing machine to perform compression processing on the wire blank subjected to the electrolysis of the copper sulfate solution according to the compression parameters to obtain a semi-finished wire rod product;

annealing the semi-finished wire, wherein annealing is carried out by adopting a pit furnace, the temperature is 320-330 ℃, the temperature rise time is 20-25min, and the heat preservation time is 70-90 min; annealing in a bell-type furnace at the temperature of 330-335 ℃, the temperature rise time of 20-25 and the heat preservation time of 100-120min, and determining the surface concave-convex rate of the annealed wire semi-finished product;

determining the surface carbon coating thickness to be 0.01nm under the condition that the surface concave-convex rate is less than 0.2%, determining the surface carbon coating thickness to be 0.02nm under the condition that the surface concave-convex rate is 0.2-0.3%, determining the surface carbon coating thickness to be 0.03nm under the condition that the surface concave-convex rate is more than 0.3%, and coating the annealed wire rod semi-finished product with carbon according to the surface carbon coating thickness to obtain the bronze wire.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.